Morphological Modifications of Selenium by Recrystallization of its Aqueous Complex Solutions

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Abstract:

Recrystallization of elemental selenium (Se) from aqueous solution in presence of sodium sulphite (Na2SO3) and sodium sulphide (Na2S) acting as complexing agents has resulted in the formation of nano and microstructures of Se having five different morphological modifications.(1) An aqueous solution of sodium selenosulphate (Na2SO3Se) obtained by dissolving Se in Na2SO3 under refluxing condition yields hemispherical microcrystals.(2) The filtrate of the above reaction mixture on aging produces hexagonal prismatic microrods of Se. Addition of Na2SO3 Se solution to formalin (HCHO) at room temperature and refluxing conditions generates (3) Se nanorods, and (4) spherical microcrystals, respectively.(5) Recrystallization of Se from aqueous solution of Na2S develops flower shaped microcrystals.

Keywords: MICROCRYSTAL; NANORODS; SELENIUM; SODIUM SELENOSULPHATE; SODIUM SULPHIDE; SODIUM SULPHITE

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2006.328

Publication date: July 1, 2006

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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